Cutting gun lifting mechanism of plasma cutting machine

Abstract

The utility model relates to the technical field of plasma cutting machines, in particular to a plasma cutting machine cutting gun lifting mechanism which comprises a cutting table, guide rods are arranged on the front side and the rear side of the cutting table, a sliding base is connected to the guide rods in a sliding mode, a lifting base is arranged above the sliding base, and a lifting mechanism is arranged between the sliding base and the lifting base. A limiting rod is arranged between the lifting seats on the front side and the rear side, a movable frame is slidably connected to the limiting rod, a sliding groove is formed in the side, away from the limiting rod, of the bottom end of the movable frame, a liftable case is slidably connected to the inner side of the sliding groove, and a control mechanism for accurately regulating and controlling the height of the case is arranged on the inner side of the movable frame. A cutting head is arranged at the position, close to the bottom end, of the inner side of the machine box, and a mounting base is arranged at the bottom of the cutting head. According to the cutting gun, the lifting mechanism and the control mechanism are arranged, so that the gun head can be controlled at high precision, and the best distance between the cutting gun and a material is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of plasma cutting machines, and particularly relates to a plasma cutting gun lifting mechanism. Background Technique

[0002] The plasma cutting gun of a plasma cutting machine is a key component in the plasma cutting system, mainly used to generate and guide the plasma arc, so that the plasma arc is generated under high pressure through a narrowed opening, and thus a very high temperature is formed to melt the metal.

[0003] In the prior art, a numerical control plasma cutting gun lifting mechanism of a Chinese patent with the publication number CN218799757U adopts the scheme of "including a bottom frame, with first sliding grooves opened on both sides of the bottom frame, a gantry is arranged outside the bottom frame, a second sliding groove is opened at the upper end of the gantry, a square box is slidably arranged on one side of the second sliding groove, a chassis is arranged on one side of the bottom frame, a display screen is arranged on one side of the chassis, and a button is arranged on one side of the chassis". This scheme solves the problem that the lifting range of the traditional numerical control plasma cutting gun is limited and it is not convenient to cut thinner or thicker objects.

[0004] However, there are still some deficiencies in the above scheme. For example, when adjusting the height of the cutting gun, the adjustment height has certain limitations, and the control effect on the height of the cutting gun during the adjustment process is relatively low. It is impossible to accurately adjust the height of the cutting gun with high precision, and thus it is impossible to ensure the best distance between the cutting gun and the material, directly affecting the cutting quality and efficiency of the material. In view of this, the utility model proposes a plasma cutting gun lifting mechanism. Summary of the Invention

[0005] The purpose of the utility model is to provide a plasma cutting gun lifting mechanism, which can precisely control the gun head, so as to ensure the best distance between the cutting gun and the material, and solve the problem of being unable to ensure the best distance between the cutting gun and the material proposed in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical scheme:

[0007] A plasma cutting gun lifting mechanism includes a cutting table, guide rods are arranged on both the front and rear sides of the cutting table, a sliding seat is slidably connected to the guide rods, a lifting seat is arranged above the sliding seat, a lifting mechanism is arranged between the sliding seat and the lifting seat, a limiting rod is arranged between the lifting seats on both sides, a movable frame is slidably connected to the limiting rod, a sliding groove is opened at the bottom end of the movable frame and on the side far from the limiting rod, a chassis that can be lifted is slidably connected to the inner side of the sliding groove, a control mechanism for precisely regulating the height of the chassis is arranged inside the movable frame, a cutting head is arranged inside the chassis and near the bottom end, and a mounting seat is arranged at the bottom of the cutting head.

[0008] As a preferred technical solution, material rods are arranged in an array on the inner side of the cutting table, and the ends of the material rods are fixedly welded to the cutting table.

[0009] As a preferred technical solution, the lifting mechanism includes a column and a hydraulic cylinder. The column is arranged at the top of the sliding seat and on one side close to the material rod. A sliding rod is slidably connected inside the column, and the top of the sliding rod is fixedly connected to the bottom of the lifting seat. The hydraulic cylinder is installed at the top of the sliding seat and close to the column, and the piston rod of the hydraulic cylinder is fixedly connected to the bottom of the lifting seat.

[0010] As a preferred technical solution, both ends of the limiting rod are fixedly welded to the front and rear lifting seats respectively. A first ball screw is arranged above the limiting rod, and the end of the first ball screw is rotatably connected to the lifting seat. A first motor for driving the first ball screw to rotate is installed on the front lifting seat.

[0011] As a preferred technical solution, connecting holes parallel to each other are formed at the bottom end of the movable frame and close to the sliding groove, and a control cavity is arranged on the movable frame and above the sliding groove.

[0012] As a preferred technical solution, a control block is fixedly welded on the top of the machine box and inside the control cavity. The control mechanism includes a second ball screw arranged inside the control cavity. The second ball screw penetrates through the control block and its end is rotatably connected to the movable frame. A second motor for driving the second ball screw to rotate is installed on the top of the movable frame.

[0013] As a preferred technical solution, a detachable gun head is installed on the mounting seat and close to the center. A distance measuring sensor is installed at the bottom of the mounting seat and outside the gun head.

[0014] As a preferred technical solution, an integrally formed threaded seat is arranged at the bottom of the mounting seat and close to the edge, and a protective cover is threadedly connected to the outside of the threaded seat.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. By setting a lifting mechanism and a control mechanism, the present utility model can preliminarily adjust the height of the gun head through the lifting mechanism, and drive the machine box to move up and down along the movable frame through the control mechanism, and further precisely adjust the height of the gun head, so as to expand the adjustment range of the height of the machine box and the gun head, and real-time monitor and feedback through the distance measuring sensor during adjustment, improve the accuracy during the adjustment of the gun head, thus ensuring the best distance between the cutting torch and the material, and improving the cutting quality and efficiency.

[0017] 2. The present utility model is driven by a first ball screw and a second ball screw. Since the ball screw has the advantages of high precision, reversibility, high efficiency, and low frictional resistance, it can precisely control the movable frame and the chassis, and ensure high stability during cutting. At the same time, during the adjustment process, it is protected by a protective cover, which can effectively prevent the gun head from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 is the overall structural schematic diagram of the present utility model;

[0020] Figure 2 is the structural schematic diagram of the sliding seat of the present utility model;

[0021] Figure 3 is the structural schematic diagram of the chassis of the present utility model;

[0022] Figure 4 is the structural schematic diagram of the movable frame of the present utility model;

[0023] Figure 5 is the structural schematic diagram of the cutting head of the present utility model.

[0024] In the figure: 1, cutting table; 11, guide rod; 12, material rod; 2, sliding seat; 21, column; 22, sliding rod; 23, hydraulic cylinder; 3, lifting seat; 31, limiting rod; 32, first ball screw; 33, first motor; 4, movable frame; 41, connection hole; 42, chute; 43, control cavity; 44, second ball screw; 45, second motor; 5, chassis; 51, control block; 52, cutting head; 53, mounting seat; 54, gun head; 55, distance measuring sensor; 56, threaded seat; 57, protective cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0026] According to the attached Figures 1-5As shown in the figure, an embodiment of the present utility model provides a lifting mechanism for a plasma cutting torch, which includes a cutting table 1. Guide rods 11 are arranged on both the front and rear sides of the cutting table 1. A sliding seat 2 is slidably connected to the guide rods 11. A lifting seat 3 is arranged above the sliding seat 2. A lifting mechanism is arranged between the sliding seat 2 and the lifting seat 3. A limiting rod 31 is arranged between the lifting seats 3 on both the front and rear sides. A movable frame 4 is slidably connected to the limiting rod 31. A chute 42 is formed at the bottom end of the movable frame 4 and on the side far from the limiting rod 31. A liftable chassis 5 is slidably connected to the inner side of the chute 42. A control mechanism for precisely regulating the height of the chassis 5 is arranged inside the movable frame 4. A cutting head 52 is arranged inside the chassis 5 and near the bottom end. An installation seat 53 is arranged at the bottom of the cutting head 52.

[0027] During the cutting process, the lifting mechanism can drive the lifting seat 3 to move up and down, and the lifting seat 3 drives the movable frame 4 and the chassis 5 to lift, so as to preliminarily adjust the height of the cutting head 52. Then, the control mechanism drives the chassis 5 to lift and move along the movable frame 4 to further precisely adjust the height of the cutting head 52, thereby expanding the adjustment range of the height of the chassis 5 and the cutting head 52 and improving the accuracy of the adjustment of the cutting head 52, facilitating the cutting operation of different materials.

[0028] Material rods 12 are arranged in an array inside the cutting table 1. The ends of the material rods 12 are fixedly welded to the cutting table 1. The material rods 12 play a role in supporting the material to be cut.

[0029] The lifting mechanism includes a column 21 and a hydraulic cylinder 23. The column 21 is arranged on the top of the sliding seat 2 and on the side close to the material rod 12. A sliding rod 22 is slidably connected to the inside of the column 21. The top of the sliding rod 22 is fixedly connected to the bottom of the lifting seat 3. The hydraulic cylinder 23 is installed on the top of the sliding seat 2 and near the column 21. The piston rod of the hydraulic cylinder 23 is fixedly connected to the bottom of the lifting seat 3.

[0030] When the hydraulic cylinder 23 operates, it can drive the lifting seat 3 to lift. At the same time, the sliding rod 22 slides up and down along the column 21 and is limited, thereby improving the stability of the movement of the lifting seat 3 and facilitating the preliminary adjustment of the height of the chassis 5 and the cutting head 52.

[0031] Both ends of the limiting rod 31 are fixedly welded to the lifting seats 3 on both the front and rear sides. A first ball screw 32 is arranged above the limiting rod 31. The end of the first ball screw 32 is rotatably connected to the lifting seat 3. A first motor 33 for driving the first ball screw 32 to rotate is installed on the front lifting seat 3.

[0032] At the bottom of the movable frame 4 and near the sliding groove 42, parallel connection holes 41 are provided. The limiting rod 31 penetrates through the lower connection hole 41, and the first ball screw 32 penetrates through the upper connection hole 41. A control cavity 43 is arranged on the movable frame 4 above the sliding groove 42.

[0033] When the first motor 33 operates to drive the first ball screw 32 to rotate, the rotary motion is converted into a linear motion, so that the movable frame 4 slides along the limiting rod 31, thereby adjusting the positions of the movable frame 4 and the chassis 5 back and forth. Due to the advantages of high precision, reversibility, high efficiency and friction resistance of the ball screw, the movement of the movable frame 4 can be controlled with high precision, and high stability can be ensured during cutting.

[0034] A control block 51 is welded and fixed on the top of the chassis 5 and inside the control cavity 43. The control mechanism includes a second ball screw 44 arranged inside the control cavity 43. The second ball screw 44 penetrates through the control block 51, and the end is rotatably connected to the movable frame 4. A second motor 45 for driving the second ball screw 44 to rotate is installed on the top of the movable frame 4.

[0035] When the second motor 45 operates to drive the second ball screw 44 to rotate, the control block 51 can move linearly along the second ball screw 44, and drive the chassis 5 to move up and down along the sliding groove 42, which is convenient for adjusting the heights of the chassis 5 and the cutting head 52. At the same time, due to the advantages of high precision, reversibility, high efficiency and friction resistance of the ball screw, the heights of the chassis 5 and the cutting head 52 can be accurately controlled to reduce the errors generated during the cutting process.

[0036] A detachable gun head 54 is installed on the mounting seat 53 and near the center. The gun head 54 can be fixed or disassembled through the mounting seat 53, so that different gun heads 54 can be used according to the cutting requirements. A distance measuring sensor 55 is installed at the bottom of the mounting seat 53 and outside the gun head 54. The distance measuring sensor 55 can be a laser sensor or a capacitance sensor, which can monitor the distance between the cutting torch and the material in real time and feed the data back to the controller inside the chassis 5, so that the controller adjusts the height of the gun head 54 according to the feedback data, so that the gun head 54 maintains the best cutting height.

[0037] A integrally formed threaded seat 56 is arranged at the bottom of the mounting seat 53 and near the edge. A protective cover 57 is threadedly connected to the outside of the threaded seat 56. The protective cover 57 can protect the outside of the gun head 54 to avoid the gun head 54 colliding or rubbing against the material during movement, effectively preventing the gun head 54 from being damaged. In addition, in order to avoid the protective cover 57 affecting the cutting effect of the gun head 54, the lowest point of the gun head 54 is lower than the lowest point of the protective cover 57.

[0038] When the plasma cutting torch lifting mechanism of the present utility model is in use, first, the torch head 54 is installed on the mounting seat 53. Then, the material to be cut is placed on the material rod 12. After that, the hydraulic cylinder 23 is operated to drive the lifting seat 3 to move up and down, and the height of the torch head 54 is preliminarily adjusted. The torch head 54 is adjusted to a suitable height. Then, the second motor 45 is operated to drive the second ball screw 44 to rotate, so that the control block 51 moves linearly along the second ball screw 44, and drives the machine box 5 to move up and down along the chute 42, and the height of the torch head 54 is adjusted with high precision. At the same time, the distance measuring sensor 55 monitors the distance between the cutting torch and the material in real time, and feeds the data back to the controller inside the machine box 5. When the torch head 54 is adjusted to the optimal cutting height, the second motor 45 stops operating. Then, the first motor 33 is operated to drive the first ball screw 32 to rotate, so that the movable frame 4 drives the machine box 5 to move along the first ball screw 32, and the torch head 54 cuts the material.

[0039] The above shows and describes the basic principle, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A plasma cutting machine cutting gun lifting mechanism, comprising a cutting table (1), characterized in that: The cutting table (1) is provided with guide rods (11) on both the front and rear sides, a slide seat (2) is slidably connected to the guide rods (11), a lifting seat (3) is provided above the slide seat (2), a lifting mechanism is provided between the slide seat (2) and the lifting seat (3), a limiting rod (31) is provided between the lifting seats (3) on the front and rear sides, a movable frame (4) is slidably connected to the limiting rod (31), a sliding groove (42) is provided at the bottom end of the movable frame (4) and on the side away from the limiting rod (31), a liftable chassis (5) is slidably connected to the inner side of the sliding groove (42), a control mechanism for accurately adjusting the height of the chassis (5) is provided on the inner side of the movable frame (4), a cutting head (52) is provided on the inner side of the chassis (5) and near the bottom end, and a mounting seat (53) is provided at the bottom of the cutting head (52).

2. The plasma cutting machine cutting gun lifting mechanism according to claim 1, characterized in that: The inner side of the cutting table (1) is provided with material rods (12) distributed in an array, and the ends of the material rods (12) are welded and fixed to the cutting table (1).

3. The plasma cutting machine cutting gun lifting mechanism according to claim 1, characterized in that: The lifting mechanism comprises a column (21) and a hydraulic cylinder (23); the column (21) is arranged at the top of the slide seat (2) and close to the side of the material rod (12); a sliding rod (22) is slidably connected to the inner side of the column (21); the top of the sliding rod (22) is fixedly connected to the bottom of the lifting seat (3); the hydraulic cylinder (23) is installed at the top of the slide seat (2) and close to the column (21); the piston rod of the hydraulic cylinder (23) is fixedly connected to the bottom of the lifting seat (3).

4. The plasma cutting machine cutting gun lifting mechanism according to claim 1, characterized in that: The two ends of the limit rod (31) are respectively welded and fixed to the lifting seats (3) at the front and rear sides; a first ball screw (32) is arranged above the limit rod (31); the end of the first ball screw (32) is rotatably connected to the lifting seat (3); and a first motor (33) for driving the first ball screw (32) to rotate is installed on the front lifting seat (3).

5. The plasma cutting machine cutting gun lifting mechanism according to claim 1, characterized in that: The bottom end of the movable frame (4) and close to the slide groove (42) are provided with mutually parallel connecting holes (41), and the movable frame (4) and above the slide groove (42) are provided with a control cavity (43).

6. The plasma cutting machine cutting gun lifting mechanism according to claim 5, characterized in that: A control block (51) is welded and fixed on the top of the chassis (5) and located inside the control chamber (43); the control mechanism comprises a second ball screw (44) arranged inside the control chamber (43); the second ball screw (44) passes through the control block (51) and an end portion is rotatably connected to the movable frame (4); a second motor (45) for driving the second ball screw (44) to rotate is installed on the top of the movable frame (4).

7. The plasma cutting machine cutting gun lifting mechanism according to claim 1, characterized in that: A detachable gun head (54) is installed on the mounting seat (53) near the center, and a distance measuring sensor (55) is installed at the bottom of the mounting seat (53) and outside the gun head (54).

8. The plasma cutting machine cutting gun lifting mechanism according to claim 7, characterized in that: An integrally formed threaded seat (56) is provided at the bottom of the mounting seat (53) and close to the edge thereof, and a protective cover (57) is threadedly connected to the outer side of the threaded seat (56).

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